GE Industrial Solutions CPS2500D +-190V - Manual (Page 20)

CPS2500D +/-190V Downstream System
3 - 2 Engineering and Ordering Issue 4 January 2008
Engineering
Engineering a telephone line powered system requires knowledge about the
resistance of the input wires feeding each circuit. To make a rough estimate
follow these steps. An example follows each step in [ ] brackets.
1. Assess the total resistance of the loop feeding each circuit. [ 600 Ω ]
2. Decide how much power your load requires. [ 600W ]
3. Choose the highest power curve available for circuits with the input
resistance provided by your network. [ For 600 Ω, the 60Watt line almost
works. This looks like about 58 Watts.]
Figure 3-1: Constant Delivered Power Curves
(normal range of operation)